Question

61) resolva as equações A)x-x/2=1 B)x/3-x/2=15 3x/2-5x=7

Answer 1

a) x - x/2 = 1 → faz o mmc
2x/2 - x/2 = 1
2x - x = 2.1
x= 2

b) x/3 - x/2 = 15 → faz o mmc
2x/6 - 3x/6 = 15
- x = 6.15 .(-1)
x= - 90

c) 3x/2 - 5x = 7 → faz o mmc
3x/2 - 10x/2 = 7
-7x = 2 . 7  .(-1)
x = -14/7
x= - 2